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Richard Geldreich's Blog: ETC1S texture format encoding and how it's transcoded to BC1

richg42.blogspot.com · 1,054 words · saved by 1 readers

I developed the ETC1S encoding method back in late 2016, and we talked about it publicly in our CppCon '16 presentation. It's good to see t...

I developed the ETC1S encoding method back in late 2016, and we talked about it publicly in our CppCon '16 presentation. It's good to see that this encoding is working well in crunch too (better bitrate for near equal error). There are kodim statistics on Alexander's checkin notes: https://github.com/Unity-Technologies/crunch/commit/660322d3a611782202202ac00109fbd1a10d7602 I described the format details and asked Alexander to support ETC1S so we could add universal support to crunch. Anyhow, ETC1S is great because it enables simplified transcoding to BC1 using a couple small lookup tables…

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